WO2019174593A1

WO2019174593A1 - Control channel sending method, apparatus and device, detection method, apparatus and device, and storage medium

Info

Publication number: WO2019174593A1
Application number: PCT/CN2019/077950
Authority: WO
Inventors: 陈艺戬; 鲁照华; 朱伏生
Original assignee: 中兴通讯股份有限公司
Priority date: 2018-03-13
Filing date: 2019-03-13
Publication date: 2019-09-19
Also published as: CN115001637B; CN110278059B; CN110278059A; EP3767861A1; US20210092718A1; CN115001637A; US11412500B2; EP3767861A4

Abstract

Disclosed are a control channel sending method, apparatus and device, a detection method, apparatus and device, and a storage medium. The control channel sending method comprises: a sending end sends a first control channel using a first transmission configuration, the first control channel bearing first control information which is used for indicating transmission configuration information of a data channel; the sending end sends a second control channel using a second transmission configuration, the second control channel bearing second control information which is used for indicating the transmission configuration information of the data channel.

Description

Control channel transmission, detection method, device and device, storage medium

The present disclosure claims priority to Chinese Patent Application No. 201101206077.2, filed on March 13, 2018, the entire disclosure of which is hereby incorporated by reference.

Technical field

The present disclosure relates to the field of communications technologies, for example, to a control channel transmission method, apparatus and device, detection method, apparatus and device, and computer readable storage medium.

Background technique

In the 5th Generation Mobile Communication Technology (5G), the resources of the physical layer control channel are very valuable, and the resource utilization of the control channel is an important factor affecting the transmission efficiency of the system. In the related art, the utilization of control channel resources is not high and needs to be improved.

Summary of the invention

The present disclosure provides a control channel transmission method, device and device, detection method, device and device, and computer readable storage medium, which improve control channel resource utilization.

The present disclosure provides a control channel sending method, including:

The transmitting end sends the first control channel by using the first transmission configuration, where the first control channel carries the first control information, where the first control information is used to indicate the transmission configuration information of the data channel;

The transmitting end sends a second control channel by using a second transmission configuration, where the second control channel carries second control information, and the second control information is used to indicate transmission configuration information of the data channel.

The present disclosure provides a control channel sending apparatus, including:

a configuration information acquiring unit, configured to acquire the first transmission configuration and the second transmission configuration;

a sending unit, configured to send, by using the first transmission configuration, a first control channel, where the first control channel carries first control information, where the first control information is used to indicate transmission configuration information of the data channel; The second transmission configuration sends a second control channel, where the second control channel carries second control information, and the second control information is used to indicate transmission configuration information of the data channel.

The present disclosure provides a control channel transmitting apparatus including a memory and a processor that stores a program that, when read and executed by the processor, implements the above-described control channel transmitting method.

The present disclosure provides a computer readable storage medium storing at least one program executable by at least one processor to implement the control channel transmission method described above.

The present disclosure provides a control channel detection method, including:

The receiving end detects the first control channel by using the first transmission configuration, and acquires first control information from the first control channel, where the first control information indicates transmission configuration information of the data channel;

The receiving end detects the second control channel by using the second transmission configuration, and acquires second control information from the second control channel, where the second control information indicates transmission configuration information of the data channel.

The present disclosure provides a control channel detecting apparatus, including:

a detecting unit configured to detect the first control channel using the first transmission configuration, acquire first control information from the first control channel, the first control information indicating transmission configuration information of the data channel; and, using the The second transmission configuration detects the second control channel, and acquires second control information from the second control channel, the second control information indicating transmission configuration information of the data channel.

The present disclosure provides a control channel detecting apparatus including a memory and a processor that stores a program that implements the above-described control channel detecting method when read by the processor.

The present disclosure provides a computer readable storage medium storing at least one program executable by at least one processor to implement the control channel detection method described above.

DRAWINGS

FIG. 1 is a flowchart of a method for transmitting a control channel according to an embodiment;

2 is a block diagram of a control channel transmitting apparatus according to an embodiment;

FIG. 3 is a flowchart of a method for detecting a control channel according to an embodiment; FIG.

4 is a block diagram of a control channel detecting apparatus according to an embodiment;

FIG. 5 is a block diagram of a control channel sending device according to an embodiment; FIG.

FIG. 6 is a block diagram of a control channel detecting apparatus according to an embodiment.

detailed description

Embodiments of the present disclosure will be described hereinafter with reference to the accompanying drawings.

The steps illustrated in the flowchart of the figures may be executed in a computer system such as a set of computer executable instructions.

The utilization of the control channel resources in the related art is not very satisfactory, and there is a problem that the utilization rate is not high, which is specifically manifested in the following aspects.

1. Different physical layer control information transmission adopts the same transmission configuration, and the efficiency is not high.

There are a variety of 5G physical layer control signaling, including resource allocation information, carrier indication, BandWidth Part (BWP) indication, channel state information (CSI) reporting trigger indication, and uplink power control command. Hybrid Automatic Repeat ReQuest (HARQ) information, Demodulation Reference Signal (DMRS) configuration indication, Modulation and Coding Scheme (MCS) mode indication, measurement pilot (channel status) Triggering by Channel State Information Reference Signal (CSI-RS) and Sounding Reference Signal (SRS), physical resource block (PRB) binding (bundling) parameters, quasi-common position (Quasi) -co-location, QCL) relationship indication, precoding indication, and so on.

In these signaling, whether it is a Downlink Control Information (DCI) format for uplink transmission or downlink transmission, multiple types of information in these signalings are included in the same DCI format for transmission. But in fact, although all belong to the physical layer control signaling, there are more stringent bit error rate requirements than the data information. When different control information is sent, the same transmission parameter configuration is used, such as the following types of transmission parameters: code Rate, MCS, beam, power, mapping, etc., which leads to inefficiencies.

2. Poor configuration flexibility of the control channel resource set (CORESET) leads to waste of resources.

When the DCI information is sent in the control channel, the user equipment (User Equipment, UE) needs to pass the blind detection to determine whether there is DCI, the location of the DCI, and the size of the resource. So you need to pre-configure the CORESET of the control channel and then define the search space in the resource collection. A problem in the related art is that CORESET cannot dynamically adjust the size and position through physical layer signaling, and can only be semi-statically adjusted by higher layer signaling. The CORESET is generally shared by more users. If the CORESET is too small, the user's control resources will not be enough. Therefore, it is necessary to configure a large enough CORESET to cope with the situation where multiple users are activated. However, this will result in waste of resources, and multiple users in CORESET cannot dynamically coordinate resources and are prone to resource fragmentation.

3, DCI itself leads to waste of resources

The new radio access technology (NR) DCI design is more complicated than the Long Term Evolution (LTE). Some parameters have strong correlation, and the bits need to be reserved according to the maximum situation. The BWP indication affects the number of bits used for resource allocation. The resource allocation needs to reserve bits according to the BWP with the largest number of Resource Blocks (RBs); the resource allocation type also affects the resource allocation bits. The number of resources, the resource allocation needs to be reserved according to the type of resource allocation (RA). The number of bits of the DMRS configuration parameter is affected by the number of bits of the DMRS configuration parameter. The TRI is the largest case to consider the number of DMRS configuration parameter bits, and so on. These situations also cause waste of resources. With the evolution of 5G, the correlation between control information will become more and more common, and it is difficult to support dynamic DCI size, so there is a waste of overhead.

FIG. 1 is a schematic diagram of a method for transmitting a control channel according to an embodiment. As shown in FIG. 1 , the method provided in this embodiment includes the following steps.

Step 1010: The sending end sends the first control channel by using the first transmission configuration, where the first control channel carries the first control information, where the first control information is used to indicate the transmission configuration information of the data channel.

Step 1020: The sending end sends a second control channel by using a second transmission configuration, where the second control channel carries second control information, where the second control information is used to indicate transmission configuration information of the data channel.

In this embodiment, the first control information and the second control information may be divided according to a preset rule, for example, may be divided by the manner listed in Table 1.

Table 1

method one

According to the importance (Block Error Rate (BLER))

方式二Way two	按照信令的作用时间划分According to the action time of signaling
方式三Way three	按照信令的作用链接(Link)数目划分According to the number of links (Link) of signaling
方式四Way four	按照信令大小(Size)变化特性划分According to the signaling size (Size) change characteristics
方式五Way five	按照信令的用途划分(解调、非解调)According to the purpose of signaling (demodulation, non-demodulation)

In the present disclosure, different control information is transmitted by using different control configurations of the control channel, and the control information can be differentiated to adopt different transmission configurations, which can improve resource utilization and ensure data transmission performance.

In this embodiment, the first control information and the second control information may be used to jointly indicate the same transmission configuration information, and may also be used to indicate different transmission configuration information.

In an embodiment, the first control channel L1 further carries third control information, where the third control information includes at least one of: pilot trigger information, feedback trigger information, BWP configuration information, and transmission configuration indication (Transmission) Configuration Indication (TCI) information, second control channel L2 configuration information. In this embodiment, the example is only an example here, and other information may be included in the third control information.

In an embodiment, the first control information content belongs to the same DCI format, and the third control information content belongs to the same DCI format, and the third control information and the first control information belong to the same DCI format or respectively adopt different DCI formats.

In an embodiment, the second transmission configuration is determined according to at least one of the first transmission configuration and the third control information.

The second transmission configuration includes an aggregation level selection range, a transmission power, a location, a blind detection search space, an MCS, a rate matching parameter, a mapping parameter, a second control information sub-block number, a transmission layer number, or a DMRS of the second control channel L2. The number of ports, the DMRS port allocation, the multiplexing mode of the second control channel L2 and the data channel, and the like.

In an embodiment, the aggregation level selection range of the second control channel L2 is determined by at least one of: an aggregation level of the first control channel, indication information carried by the third control information, and modulation of a data channel. Encoding.

Manner 1: determining according to the aggregation level used by the first control channel L1, or determining according to the indication information carried by the third control information, or determining according to the aggregation level used by the first control channel L1 and the indication information carried by the third control information. .

There is an association relationship between the aggregation levels of the first control channel L1 and the second control channel L2. For example: (the aggregation level of the second control channel L2 / the number of information bits of the second control channel L2) <= (the aggregation level of the first control channel L1 / the number of information bits of the first control channel L1).

The aggregation level of the second control channel L2 may also be directly notified by the third control information, such as the aggregation level of the second control channel L2, AL=8; or the notification range, such as the aggregation level range of the second control channel L2, AL=[8, 16] Then, the terminal judges whether the aggregation level of the second control channel L2 is 8 or 16 by blind detection.

Manner 2: Determine according to the modulation and coding mode of the data channel.

The modulation coding mode of the data channel corresponds to the aggregation level selection range of the second control channel L2.

In an embodiment, the presence or absence of the second control channel L2 is determined by the DCI format format transmitted by the first control channel L1. For example, control signaling for downlink data transmission is transmitted by the first control channel L1 and the second control channel L2; control signaling for uplink data transmission has no second control channel L2 and is transmitted only by the first control channel L1. It may also be determined according to the DCI format format to be transmitted, such as DCI Format 1_0, DCI Format 0_0 is sent by the first control channel L1 and the second control channel L2, and DCI Format 1_1, DCI Format 0_1 is only sent by the first control channel L1. . Here, for example only, which DCI format formats can be transmitted by the first control channel L1 and which DCI format formats are transmitted by the second control channel L2 can be set as needed.

In an embodiment, the transmit power of the second control channel L2 is determined by at least one of: a transmit power of the first control channel and indication information carried by the third control information.

For example, it is determined according to the indication information carried by the third control information, or determined according to the transmission power of the first control channel L1.

For example, there is an offset value for the control information transmission power between the first control channel L1 and the second control channel L2, for example, the transmission power of the second control channel L2 is 3 decibels (dB) lower than the first control channel L1.

For example, the third control information is used to indicate the offset of the second control channel L2 power relative to the first control channel L1 power; or the offset of the second control channel L2 power relative to the transmit power of the data channel.

In an embodiment, the location of the second control channel L2 (without blind detection) is determined by at least one of: a location of the first control channel, a location of the data channel, and a third control information The indication information, the precoding granularity of the data channel, the number of transmission layers of the data channel, and the number of transmit antenna ports of the data channel.

A variety of determination methods will be described below.

Manner 1: Determine according to the position of the first control channel L1.

For example, the second control channel L2 is also in the CORESET where the first control channel L1 is located.

For example, the time domain location of the second control channel L2 is within the tth time domain symbol after the time domain symbol of the first control channel L1; t is a natural number greater than or equal to 1, and may be agreed or configured by the base station.

For example, the time domain position of the second control channel L2 is within the kth time domain Slot after the time slot of the first control channel L1; k is a natural number greater than or equal to 1, and may be agreed or configured by the base station.

Method 2: Determine according to the location of the data channel.

For example, the time domain location of the second control channel L2 is in the first x time domain symbols in the data channel occupation symbol; x=1, 2, . . . N, N is the total number of time domain symbols occupied by the data channel.

For example, the frequency domain location of the second control channel L2 is on the frequency domain resource allocated by the data channel, and the discrete mapping is performed according to the preset mapping function F.

For another example, the second control channel L2 is located on the symbol of the demodulation pilot of the data channel; or the second control channel L2 is located at one or more resource element (RE) locations adjacent to the demodulation pilot.

Manner 3: Determine according to the indication information carried by the third control information.

The upper layer pre-configures a plurality of CORESETs for the second control channel L2 transmission, and indicates the selected CORESET by the third control information; or the third control information indicates whether the second control channel L2 is transmitted in the control region or in the data region Or, the third control information indicates a specific transmission location of the second control channel L2 in the data area, including a frequency domain or a time domain location.

Mode 4: The location of the first control channel L1 and the location of the data channel are jointly determined.

For example, the second control channel L2 is spaced apart from the first control channel L1 by at least s symbols and is located in the time domain symbol in which the data signal is located. The x time-domain symbols with the lowest index of the condition are required; x=1, 2, ..., N, N are the total number of time-domain symbols occupied by the data channel. For another example, the second control channel L2 is located after the time domain symbol in which the first control channel L1 is located, and before the time domain symbol in which the data channel is located.

Manner 5: Determine according to the precoding granularity of the data channel.

For example, the precoding granularity of the uplink data channel affects the number of uplink Precoding Matrix Indicators (TPMIs), which affects the second control information overhead. When the second control channel L2 cannot carry all the TPMI information on one CORESET, the information is divided into multiple sub-blocks and occupies resources of multiple CORESETs.

It is possible to calculate how many sub-blocks are needed according to the size of the CORESET and the aggregation level used according to the precoding granularity. Then enable the corresponding CORESETs resource.

These sub-blocks may have independent Cyclic Redundancy Check (CRC) checks or a combined CRC check. An application such as transmitting such a plurality of TPMIs, transmitting second control information of a plurality of links, and transmitting second control information of a plurality of slots may be independent CRC check. For some other applications, it can be a joint CRC check. Whether it is independent or combined CRC can be determined by the first control information and the second control information partitioning strategy.

When divided into multiple sub-blocks, each sub-block may carry block number information corresponding to the sub-block, or may pre-arrange the correspondence between multiple sub-blocks and CORESET.

In addition, if the number of sub-blocks is very large, it can be partially transmitted in the CORESET, and part of the symbol transmission in which the data channel belongs. Or both of the symbol transmissions to which the data channel belongs depends mainly on the total overhead of the second control information.

Method 6: Determine according to the number of transmission layers of the data channel.

For example, when the number of layers is relatively small, the second control information is not divided, but when the number of layers is relatively large, different layers may correspond to different second control information, and therefore, block is required. In an embodiment, after the second control information is divided into multiple parts, it may be transmitted on multiple CORESETs. The specific transmission position needs to be determined according to the corresponding number of layers. When the number of layers is small, only one CORESET is needed, and when the number of layers is large, it is required. Multiple CORESET. The layer corresponding to each transport block corresponds to a second control information sub-block, and is sent corresponding to one CORESET.

Manner 7: Determine according to the number of transmit antenna ports of the data channel.

For example, when the number of transmitting antenna ports is relatively small, the second control information is not divided, and corresponds to one CORESET transmission. However, when the number of transmit antenna ports is relatively large, the second control information needs to be divided into multiple sub-blocks, corresponding to multiple CORESET transmissions or symbol transmissions where the data channel is located.

The location at which the second control channel is located may be determined according to a division rule of the first control information and the second control information. Different partitioning rules respectively correspond to different second control channel L2 positions. Under some division rules, the second control channel L2 and the first control channel L1 may both be in the transmission area of the control channel, and in some cases, the second control channel L2 may be transmitted on the time domain symbol of the data channel transmission.

In an embodiment, if blind detection is required, corresponding to the location of the second control channel L2, expanding to a set of candidate resource locations; the blind detection search space of the second control channel L2 (in case of blind detection) is according to at least Determining: a location of the first control channel, a location of the data channel, indication information carried by the third control information, a precoding granularity of the data channel, a number of transmission layers of the data channel, and the The number of transmit antenna ports for the data channel.

Manner 1: Determine according to the position of the first control channel L1. For example, the blind detection search space time domain position of the second control channel L2 is within the t-th time domain symbol after the time domain symbol of the first control channel L1; for example, the blind detection search space time domain of the second control channel L2 The position is within the t, t+1 time domain symbols after the time domain symbol of the first control channel L1; t is a natural number greater than or equal to 1, and may be agreed or configured by the base station; for example, the second control channel L2 is blind. The detected search space is also at the CORESET where the first control channel L1 is located.

Method 2: Determine according to the location of the data channel. For example, the second control channel L2 blindly detects the time domain position of the search space in the first x time domain symbols in the data channel occupation symbol; x=1, 2, ..., N, N is the time domain symbol occupied by the data channel total. For another example, the frequency domain of the L2 blind detection search space is on the frequency domain resource allocated by the data channel, and discrete mapping is performed according to the mapping function F.

Manner 3: Determine according to the indication information carried by the third control information. For example, the high layer pre-configures a plurality of CORESETs as the blind detection search space of the second control channel L2, and performs dynamic selection by using the third control information; for example, the third control information indicates that the blind detection search space of the second control channel L2 is under control. The area is still in the data area.

Manner 4: jointly determined by the location of the first control channel L1 and the data channel location; for example, the second control channel L2 blind detection search space is separated from the first control channel L1 by at least s symbols, and is located in the time domain symbol where the data signal is located . The x time-domain symbols with the lowest index of the condition are required to be met; x=1, 2, ..., the maximum is the total number of time-domain symbols occupied by the data channel. For another example, the second control channel L2 blindly detects that the search space is located after the time domain symbol in which the first control channel L1 is located, and before the time domain symbol in which the data channel is located.

Manner 5: Determine according to the precoding granularity of the data channel.

For example, the precoding granularity of the uplink data channel affects the number of uplink precoding indication TPMIs, which affects the second control information overhead. When the second control channel L2 cannot carry all the TPMI information on one CORESET, the information is divided into multiple sub-blocks and occupies resources of multiple CORESETs.

The second control information overhead may be determined according to the precoding granularity, thereby determining the blind detection space of the second control channel according to the overhead size.

The second control information overhead or the number of sub-blocks of the second control information may be determined according to the number of transmission layers of the pre-data channel, thereby determining the blind detection space of the second control channel according to the overhead size or the number of sub-blocks.

The second control information overhead or the number of sub-blocks of the second control information may be determined according to the number of transmit antenna ports of the pre-data channel, thereby determining the blind detection space of the second control channel according to the overhead size or the number of sub-blocks.

In an embodiment, the MCS of the second control channel L2 is determined according to at least one of: an aggregation level of the first control channel, a modulation and coding strategy of the data channel, and a precoding granularity of the data channel. The number of transmission layers of the data channel and the number of transmit antenna ports of the data channel.

Manner 1: Determine according to the aggregation level of the first control channel L1. For example, different aggregation levels of the first control channel L1 may determine candidate ranges of MCSs of different second control channels L2, for example, the aggregation level of the first control channel L1 is 1, corresponding to the MCS set of the second control channel L2. a, the aggregation level of the first control channel L1 is 2, corresponding to the MCS set b selectable by the second control channel L2, the aggregation level of the first control channel L1 is 4, corresponding to the MCS set c selectable by the second control channel L2. For another example, the aggregation level of the first control channel L1 is 1, 2, corresponding to the MCS set a of the second control channel L2; the aggregation level of the first control channel L1 is 4, 8, and the second control channel L2 is selectable. The MCS collection b. In this embodiment, the correspondence between the aggregation level of the first control channel L1 and the MCS of the second control channel L2 may be set according to the example.

Method 2: Determine according to the MCS of the data channel. For example, if it is the downlink scheduling control signaling, the MCS of the data channel and the candidate range of the MCS of the second control channel L2 have a corresponding relationship, and there may be a fixed MCS index correspondence, and the corresponding relationship may be one-to-one or One to many, but also many to one. For example, when one-to-one, the MCS x1 of the second control channel L2 corresponds to the MCS y1 of the data channel, the MCS x2 of the second control channel L2 corresponds to the MCS y2 of the data channel, and when the one-to-many, the MCS x1 of the second control channel L2 corresponds to the data channel. MCS{y1, y2}, MCS x2 of the second control channel L2 corresponds to the MCS{y3, y4} of the data channel; when many-to-one, the MCS {x1, x2} of the second control channel L2 corresponds to the MCS y1 of the data channel, The MCS{x3, x4} of the second control channel L2 corresponds to the MCS y2 of the data channel.

In this embodiment, the size and location of the CORESET can be dynamically adjusted. In the related art, the resource allocation of the control channel depends on blind detection. To avoid complexity, the resource allocation of the general control channel is not flexible enough. In this embodiment, the CORESET size and position flexibility of the second control channel L2 are significantly improved.

In an embodiment, the rate matching parameter of the second control channel L2 is determined according to at least one of the indication information carried by the first control information and the indication information carried by the third control information; the first control information or the third The control information carries some indication signaling for the second control channel L2 control channel Rate matching, which can better solve the collision of the control channel with other signals (such as pilot signals), and can also better perform adjacent Interference coordination between beams, nodes or cells. In an embodiment, if the indication signaling is also used for data channel rate matching, it may be carried in the first control information, and if it is only used for the second control channel L2, may be carried in the third control information.

In an embodiment, the mapping parameter of the second control channel L2 is determined according to the indication information carried by the third control information. In an embodiment, the mapping parameters include RE mapping, such as mapping, and mapping of codewords to layers, such as the number of layers to which mapping is applied.

In an embodiment, the second control information sub-block number carried by the second control channel L2 is determined according to at least one of the following: the indication information carried by the third control information, the number of codewords of the data channel, and the data. The precoding granularity of the channel, the number of transmission layers of the data channel, and the number of transmit antenna ports of the data channel.

Manner 1: Determine according to the indication information carried by the third control information. In an embodiment, the second control information may have multiple sub-blocks for different physical links, or may be used for multiple transport layers of the same physical link, or may be used for multiple of the same physical link. a set of frequency domain resources; can also be used for multiple time domain Slots of the same physical link; or for multiple physical links and multiple layers, multiple physical links and multiple Slots, multiple physical links And a plurality of frequency domain resource sets; the third control information may indicate the number of sub-blocks of the second control information, and the number of links, the number of layers, the number of slots, and the like.

Manner 2: Determine according to the number of codewords of the data channel. For example, the second control information may have multiple sub-blocks, which is the same as the number of code words of the data channel; or the second control information may have multiple sub-blocks, and there is a one-to-many correspondence relationship with the number of code words of the data channel.

In an embodiment, the number of transmission layers or the number of DMRS ports of the second control channel L2 is determined according to at least one of the following: indication information carried by the first control information and indication information carried by the third control information. Manner 1: According to the indication information carried in the first control information, for example, the number of codeword streams of the data channel is the same; the second method: determining, according to the indication information carried by the third control information, generally needs to be less than or equal to the DMRS or layer of the data channel. (layer) number.

In an embodiment, the DMRS port of the second control channel L2 is determined according to at least one of the following: the indication information carried by the first control information and the indication information carried by the third control information.

For example, according to the indication information carried by the first control information, for example, a subset of the DMRS ports corresponding to the higher codeword stream of the MCS of the data channel may be the port with the smallest or largest port number; or may be multiple ports. merge. For example, the third control information indicates that the DMRS port allocation of the second control channel L2 may be one of the DMRS ports corresponding to the higher codeword stream of the MCS indicating the data channel.

In an embodiment, the multiplexing manner of the second control channel L2 and the data channel is determined according to the indication information carried by the third control information. In an embodiment, the multiplexing mode includes space division, time division, frequency division, and time division and frequency division.

In an embodiment, the size of the second control information or the DCI Format or the associated BWP or the component carrier (CC) is determined according to at least one of the following: the indication information carried by the third control information and the Two control channels L2. For example, according to the location of the second control channel, different locations will agree on the size of the corresponding size, DCI Format or the associated BWP or the associated CC.

In this embodiment, the resources of the second control channel L2 can be flexibly changed, and the size of the second control information carried by the second control channel L2 can also be indicated by the first control information. Therefore, waste of overhead can be avoided.

FIG. 2 is a schematic diagram of a control channel sending apparatus according to an embodiment. As shown in FIG. 2, the apparatus provided in this embodiment includes: a configuration information acquiring unit 201, configured to acquire a first transmission configuration and a second transmission configuration; 202. Set to send, by using the first transmission configuration, a first control channel, where the first control channel carries first control information, where the first control information is used to indicate transmission configuration information of a data channel; and, using the The second transmission configuration sends a second control channel, where the second control channel carries second control information, and the second control information is used to indicate transmission configuration information of the data channel.

In an embodiment, the first control channel further carries third control information, where the third control information includes at least one of: pilot trigger information, feedback trigger information, bandwidth segmentation configuration information, and transmission configuration indication information. And configuration information of the second control channel.

In an embodiment, the second transmission configuration acquired by the configuration information acquiring unit 201 is determined according to at least one of the first transmission configuration and the third control information.

In an embodiment, the second transmission configuration includes an aggregation level selection range of the second control channel, and an aggregation level selection range of the second control channel is determined according to at least one of: an aggregation level of the first control channel And indication information carried by the third control information and a modulation and coding manner of the data channel.

In an embodiment, the second transmission configuration includes a transmit power of the second control channel, and a transmit power of the second control channel is determined by at least one of: a transmit power of the first control channel and a The indication information carried by the third control information is described.

In an embodiment, the second transmission configuration includes a location of the second control channel or a blind detection search space, and the location of the second control channel or the blind detection search space is determined according to at least one of the following: a location of a control channel, a location of the data channel, indication information carried by the third control information, a precoding granularity of the data channel, a number of transmission layers of the data channel, and a transmit antenna port of the data channel number.

In an embodiment, the second transmission configuration includes a modulation and coding strategy of the second control channel, and a modulation and coding strategy of the second control channel is determined according to at least one of: the first control channel Aggregation level, modulation and coding strategy of the data channel, precoding granularity of the data channel, number of transmission layers of the data channel, and number of transmit antenna ports of the data channel.

In an embodiment, the second transmission configuration includes a rate matching parameter of the second control channel, and the rate matching parameter of the second control channel is determined according to at least one of the following: an indication carried by the first control information Information and indication information carried by the third control information.

In an embodiment, the second transmission configuration includes a mapping parameter of the second control channel, and a mapping parameter of the second control channel is determined according to the indication information carried by the third control information.

In an embodiment, the second transmission configuration includes a number of sub-blocks of the second control information carried on the second control channel, and a sub-controler of the second control information carried on the second control channel The number of blocks is determined according to at least one of: indication information carried by the third control information, number of codewords of the data channel, precoding granularity of the data channel, number of transmission layers of the data channel, and the data The number of transmit antenna ports for the channel.

In an embodiment, the second transmission configuration includes a number of transmission layers of the second control channel, or a number of demodulation reference signal ports of the second control channel, or a demodulation reference of the second control channel. a signal port, a number of transmission layers of the second control channel, or a number of demodulation reference signal ports of the second control channel, or a demodulation reference signal port of the second control channel is determined according to at least one of the following: The indication information carried by the first control information and the indication information carried by the third control information.

In an embodiment, the second transmission configuration includes a multiplexing manner of the second control channel and the data channel, and the multiplexing manner of the second control channel and the data channel is performed according to the indication carried by the third control information. Information is determined.

In an embodiment, the size of the second control information, the format of the downlink control information, and the bandwidth segment to which the second control information belongs, the component carrier to which the second control information belongs is determined according to at least one of the following: The indication information carried by the third control information and the location of the second control channel.

FIG. 3 is a method for detecting a control channel according to an embodiment. As shown in FIG. 3, the method for detecting a control channel provided in this embodiment includes the following steps.

Step 3010: The receiving end detects the first control channel according to the first transmission configuration, and acquires first control information from the first control channel, where the first control information is used to indicate transmission configuration information of the data channel.

Step 3020: The receiving end detects the second control channel by using the second transmission configuration, and acquires second control information from the second control channel, where the second control information is used to indicate transmission configuration information of the data channel.

In an embodiment, the receiving end further acquires third control information from the first control channel, where the third control information includes at least one of: pilot trigger information, feedback trigger information, and bandwidth segmentation configuration information. And transmitting configuration indication information and configuration information of the second control channel.

In an embodiment, before the receiving end detects the second control channel by using the second transmission configuration, the method further includes: determining, by the receiving end, according to at least one of the first transmission configuration and the third control information. The second transmission configuration.

FIG. 4 is a control channel detecting apparatus according to an embodiment. As shown in FIG. 4, the control channel detecting apparatus provided in this embodiment includes: a configuration information acquiring unit 401 configured to acquire a first transmission configuration and a second transmission configuration. The detecting unit 402 is configured to detect the first control channel by using the first transmission configuration, acquire first control information from the first control channel, where the first control information indicates transmission configuration information of the data channel; and, use The second transmission configuration detects a second control channel, and acquires second control information from the second control channel, where the second control information indicates transmission configuration information of the data channel.

In an embodiment, the configuration information acquiring unit 401 is further configured to acquire third control information from the first control channel, where the third control information includes at least one of: pilot trigger information, feedback trigger information, Bandwidth segmentation configuration information, transmission configuration indication information, and configuration information of the second control channel.

In an embodiment, the configuration information acquiring unit 401 is configured to: acquire the second transmission configuration by: determining the second according to at least one of the first transmission configuration and the third control information Transfer configuration.

In an embodiment, the second transmission configuration comprises at least one of: an aggregation level selection range of the second control channel, a location of the second control channel or a blind detection search space, and modulation of the second control channel a coding policy, a rate matching parameter of the second control channel, a mapping parameter of the second control channel, a number of sub-blocks of the second control information carried on the second control channel, the second control a number of transmission layers of the channel, a number of demodulation reference signal ports of the second control channel, a demodulation reference signal port of the second control channel, and a multiplexing manner of the second control channel and the data channel.

For details on how to determine the above information in the second transmission configuration, refer to the method embodiment, and details are not described herein again.

FIG. 5 is a control channel transmitting apparatus according to an embodiment. As shown in FIG. 5, the control channel detecting apparatus 50 provided in this embodiment includes a memory 510 and a processor 520. The memory 510 stores a program, and the program is stored. When being read and executed by the processor 520, the following operations are performed: transmitting a first control channel using a first transmission configuration, the first control channel carrying first control information, the first control information being used to indicate a data channel Transmitting configuration information; transmitting a second control channel using the second transmission configuration, the second control channel carrying second control information, the second control information being used to indicate transmission configuration information of the data channel.

In another embodiment, the program, when read and executed by the processor 520, further implements the control channel transmission method described in any of the above embodiments.

The embodiment provides a computer readable storage medium storing at least one program executable by at least one processor to implement the method described in any of the above embodiments. Control channel transmission method.

FIG. 6 is a control channel detecting device according to an embodiment. As shown in FIG. 6, the control channel detecting device 60 provided in this embodiment includes a memory 610 and a processor 620. The memory 610 stores a program, and the program is stored. The control channel detection method described in any of the embodiments is implemented when read and executed by the processor 620.

The embodiment provides a computer readable storage medium storing at least one program, the at least one program being executable by at least one processor to implement control channel detection as described in any of the embodiments method.

The computer readable storage medium includes: at least one of a U disk, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk, or an optical disk. The medium of the code.

Claims

A control channel transmission method includes:

The transmitting end sends the first control channel by using the first transmission configuration, where the first control channel carries the first control information, where the first control information is used to indicate the transmission configuration information of the data channel;

The transmitting end sends a second control channel by using a second transmission configuration, where the second control channel carries second control information, and the second control information is used to indicate transmission configuration information of the data channel.
The control channel transmitting method according to claim 1, wherein the first control channel further carries third control information, and the third control information comprises at least one of: pilot trigger information, feedback trigger information, bandwidth division Segment configuration information, transmission configuration indication information, and configuration information of the second control channel.
The control channel transmitting method according to claim 2, wherein the first control information belongs to the same downlink control information format, and the third control information belongs to the same downlink control information format.
The control channel transmitting method of claim 2, wherein the second transmission configuration is determined according to at least one of the first transmission configuration and the third control information.
The control channel transmitting method according to claim 2 or 3, wherein the second transmission configuration includes an aggregation level selection range of the second control channel, and an aggregation level selection range of the second control channel is determined according to at least one of the following :

The aggregation level of the first control channel, the indication information carried by the third control information, and the modulation and coding mode of the data channel.
The control channel transmitting method according to any one of claims 2 to 4, wherein the second transmission configuration includes a transmission power of the second control channel, and a transmission power of the second control channel is determined by at least one of the following :

The transmission power of the first control channel and the indication information carried by the third control information.
The control channel transmitting method according to claim 2 or 3, wherein said second transmission configuration includes a position of said second control channel or a blind detection search space, a position of said second control channel or a blind detection search space Determine according to at least one of the following:

a location of the first control channel, a location of the data channel, indication information carried by the third control information, a precoding granularity of the data channel, a number of transmission layers of the data channel, and a data channel Number of transmit antenna ports.
The control channel transmitting method according to claim 2 or 3, wherein the second transmission configuration includes a modulation and coding strategy of the second control channel, and the modulation and coding strategy of the second control channel is based on at least A certain:

The aggregation level of the first control channel, the modulation and coding strategy of the data channel, the precoding granularity of the data channel, the number of transmission layers of the data channel, and the number of transmit antenna ports of the data channel.
The control channel transmitting method according to claim 2 or 3, wherein the second transmission configuration includes a rate matching parameter of the second control channel, and the rate matching parameter of the second control channel is determined according to at least one of the following And the indication information carried by the first control information and the indication information carried by the third control information.
The control channel transmitting method according to any one of claims 2 to 4, wherein the second transmission configuration includes a mapping parameter of the second control channel, and mapping parameters of the second control channel are according to the third control The indication information carried by the information is determined.
The control channel transmitting method according to claim 2 or 3, wherein said second transmission configuration comprises a number of sub-blocks of said second control information carried on said second control channel, said second control channel The number of sub-blocks of the second control information carried is determined according to at least one of the following:

The indication information carried by the third control information, the number of codewords of the data channel, the precoding granularity of the data channel, the number of transmission layers of the data channel, and the number of transmit antenna ports of the data channel.
The control channel transmitting method according to claim 2 or 3, wherein the second transmission configuration includes a number of transmission layers of the second control channel, or a number of demodulation reference signal ports of the second control channel, or a demodulation reference signal port of the second control channel, a number of transmission layers of the second control channel, or a number of demodulation reference signal ports of the second control channel, or a demodulation reference of the second control channel The signal port is determined according to at least one of the following: the indication information carried by the first control information and the indication information carried by the third control information.
The control channel transmitting method according to any one of claims 2 to 4, wherein the second transmission configuration comprises a multiplexing manner of the second control channel and a data channel, and the second control channel and the data channel are complex The method is determined according to the indication information carried by the third control information.
The method for transmitting a control channel according to any one of claims 2 to 4, wherein the size of the second control information, the format of the downlink control information, the bandwidth segment to which the second control information belongs, or the second control information The associated component carrier is determined according to at least one of the following: the indication information carried by the third control information and the location of the second control channel.
A control channel transmitting device includes:

a configuration information acquiring unit, configured to acquire the first transmission configuration and the second transmission configuration;

a sending unit, configured to send, by using the first transmission configuration, a first control channel, where the first control channel carries first control information, where the first control information is used to indicate transmission configuration information of the data channel; The second transmission configuration sends a second control channel, where the second control channel carries second control information, and the second control information is used to indicate transmission configuration information of the data channel.
A control channel transmitting device comprising a memory and a processor, the memory storing a program, the program implementing the control channel transmitting method according to any one of claims 1 to 14 when being read and executed by the processor .
A computer readable storage medium storing at least one program executable by at least one processor to implement a control channel transmission method according to any one of claims 1 to 14.
A control channel detection method includes:

The receiving end detects the first control channel by using the first transmission configuration, and acquires first control information from the first control channel, where the first control information indicates transmission configuration information of the data channel;

The receiving end detects the second control channel by using the second transmission configuration, and acquires second control information from the second control channel, where the second control information indicates transmission configuration information of the data channel.
The control channel detecting method according to claim 18, wherein the receiving end further acquires third control information from the first control channel, where the third control information comprises at least one of: pilot trigger information, feedback Trigger information, bandwidth segmentation configuration information, transmission configuration indication information, and configuration information of the second control channel.
The control channel detecting method according to claim 19, before the receiving end detects the second control channel by using the second transmission configuration, further comprising: the receiving end according to the first transmission configuration and the third control information At least one of the determinations of the second transmission configuration.
The control channel detecting method according to claim 19, wherein said second transmission configuration comprises an aggregation level selection range of the second control channel, and an aggregation level selection range of said second control channel is determined according to at least one of:

The aggregation level of the first control channel, the indication information carried by the third control information, and the modulation and coding mode of the data channel.
The control channel detecting method according to claim 19, wherein said second transmission configuration comprises a position of said second control channel or a blind detection search space, and a position of said second control channel or a blind detection search space is as follows At least one of them determines:

a location of the first control channel, a location of the data channel, indication information carried by the third control information, a precoding granularity of the data channel, a number of transmission layers of the data channel, and a data channel Number of transmit antenna ports.
The control channel detecting method according to claim 19, wherein said second transmission configuration comprises a modulation and coding strategy of said second control channel, and said modulation and coding strategy of said second control channel is determined according to at least one of: :

The aggregation level of the first control channel, the modulation and coding strategy of the data channel, the precoding granularity of the data channel, the number of transmission layers of the data channel, and the number of transmit antenna ports of the data channel.
The control channel detecting method according to claim 19, wherein the second transmission configuration includes a rate matching parameter of the second control channel, and the rate matching parameter of the second control channel is determined according to at least one of the following: The indication information carried by the first control information and the indication information carried by the third control information.
The control channel detecting method according to claim 19 or 20, wherein the second transmission configuration includes a mapping parameter of the second control channel, and mapping parameters of the second control channel are carried according to the third control information. The instructions are ok.
The control channel detecting method according to claim 19, wherein said second transmission configuration comprises a number of sub-blocks of said second control information carried on said second control channel, said second control channel being carried on said second control channel The number of sub-blocks of the second control information is determined according to at least one of the following:

The indication information carried by the third control information, the number of codewords of the data channel, the precoding granularity of the data channel, the number of transmission layers of the data channel, and the number of transmit antenna ports of the data channel.
The control channel detecting method according to claim 19, wherein said second transmission configuration comprises a number of transmission layers of said second control channel, or a number of demodulation reference signal ports of said second control channel, or said a demodulation reference signal port of the second control channel, a number of transmission layers of the second control channel, or a number of demodulation reference signal ports of the second control channel, or a demodulation reference signal port of the second control channel Determining, according to at least one of the following: the indication information carried by the first control information and the indication information carried by the third control information.
The control channel detecting method according to claim 19 or 20, wherein the second transmission configuration comprises a multiplexing manner of the second control channel and a data channel, and a multiplexing manner of the second control channel and the data channel And determining according to the indication information carried by the third control information.
The control channel detecting method according to claim 19 or 20, wherein the size of the second control information, the format of the downlink control information, the bandwidth segment to which the second control information belongs, or the second control information belongs to The component carrier is determined according to at least one of the following: the indication information carried by the third control information and the location of the second control channel.
A control channel detecting device includes:

a configuration information acquiring unit, configured to acquire the first transmission configuration and the second transmission configuration;

a detecting unit configured to detect the first control channel using the first transmission configuration, acquire first control information from the first control channel, the first control information indicating transmission configuration information of the data channel; and, using the The second transmission configuration detects the second control channel, and acquires second control information from the second control channel, the second control information indicating transmission configuration information of the data channel.
A control channel detecting apparatus comprising a memory and a processor, the memory storing a program, the program implementing the control channel detecting method according to any one of claims 18 to 29 when being read and executed by the processor .
A computer readable storage medium storing at least one program executable by at least one processor to implement the control channel detection method of any one of claims 18 to 29.